Abstract: There is provided a maintenance method of a head unit including a first nozzle array and a second nozzle array, the method including: in a first period, supplying a first driving signal having a first waveform to one first driving element corresponding to one first nozzle belonging to the first nozzle array to eject the liquid from one first nozzle; and supplying a second driving signal having a second waveform to one second driving element corresponding to one second nozzle belonging to the second nozzle array to eject the liquid from one second nozzle; and in a second period, supplying a third driving signal having a third waveform to the one first driving element to eject the liquid from the one first nozzle; and supplying a fourth driving signal having a fourth waveform to the one second driving element to eject the liquid from the one second nozzle.

Abstract: A liquid ejecting head includes first nozzles configured to eject a liquid in an ejecting direction, a first nozzle forming surface in which openings of the first nozzles are formed, a first surface being adjacent to the first nozzle forming surface when viewed in an opposite direction to the ejecting direction and provided in the ejecting direction relative to the first nozzle forming surface, and a first film member having water repellency on a surface directed to the ejecting direction and being detachably provided to the first surface in such a way as to expose the first nozzle forming surface in the ejecting direction.

Abstract: A recording system records a multi-tone image with liquid droplets of different amount discharged from nozzles. This recording system has a first nozzle and a second nozzle. The minimum amount of a liquid droplet discharged from the first nozzle is larger than the minimum amount of a liquid droplet discharged from the second nozzle.

Abstract: A liquid ejecting head includes first nozzles configured to eject a liquid in an ejecting direction, a first nozzle forming surface in which openings of the first nozzles are formed, a first surface being adjacent to the first nozzle forming surface when viewed in an opposite direction to the ejecting direction and provided in the ejecting direction relative to the first nozzle forming surface, and a first film member having water repellency on a surface directed to the ejecting direction and being detachably provided to the first surface in such a way as to expose the first nozzle forming surface in the ejecting direction.

Abstract: A liquid ejecting head includes a nozzle plate having a plurality of nozzles, and a flow path plate bonded to one side of the nozzle plate, the flow path plate having flow paths including a liquid reservoir configured to store a liquid to be supplied to the nozzles, in which the liquid reservoir is defined by a concave portion disposed on a side of the flow path plate opposite to the nozzle plate, a bottom of the concave portion includes a first portion along a periphery of the concave portion and a second portion inside the first portion in plan view from a thickness direction of the flow path plate, and the thickness of the first portion is thicker than the thickness of the second portion.

Abstract: A liquid ejecting apparatus carries out preliminary discharging in which the liquid is discharged from nozzle rows toward a cap. In preliminary discharging, the liquid ejecting apparatus intermittently carries out concurrent discharging and concurrent non-discharging from the nozzles in the first nozzle row and the second nozzle row in such a way that when concurrent discharging is performed from the nozzles in the first nozzle row, concurrent non-discharging from the nozzles in the second nozzle row is performed, and when concurrent discharging is performed from the nozzles in the second nozzle row, concurrent non-discharging from the nozzles in the first nozzle row is performed.

Abstract: A recording system records a multi-tone image with liquid droplets of different amount discharged from nozzles. This recording system has a first nozzle and a second nozzle. The minimum amount of a liquid droplet discharged from the first nozzle is larger than the minimum amount of a liquid droplet discharged from the second nozzle.

Abstract: A liquid ejecting head includes a nozzle plate having a plurality of nozzles, and a flow path plate bonded to one side of the nozzle plate, the flow path plate having flow paths including a liquid reservoir configured to store a liquid to be supplied to the nozzles, in which the liquid reservoir is defined by a concave portion disposed on a side of the flow path plate opposite to the nozzle plate, a bottom of the concave portion includes a first portion along a periphery of the concave portion and a second portion inside the first portion in plan view from a thickness direction of the flow path plate, and the thickness of the first portion is thicker than the thickness of the second portion.

Abstract: A liquid ejecting apparatus carries out preliminary discharging in which the liquid is discharged from nozzle rows toward a cap. In preliminary discharging, the liquid ejecting apparatus intermittently carries out concurrent discharging and concurrent non-discharging from the nozzles in the first nozzle row and the second nozzle row in such a way that when concurrent discharging is performed from the nozzles in the first nozzle row, concurrent non-discharging from the nozzles in the second nozzle row is performed, and when concurrent discharging is performed from the nozzles in the second nozzle row, concurrent non-discharging from the nozzles in the first nozzle row is performed.

Abstract: A liquid ejecting apparatus includes a liquid ejecting head having an ejecting surface on which nozzles that eject a first liquid are formed, a cap having a recess configured to cover the nozzles when the ejecting surface is capped with the cap, a liquid storage section configured to store a second liquid to flow into the recess, a connection tube configured to interconnect the recess and the liquid storage section, and a pump configured to cause the second liquid to flow from the liquid storage section into the recess through the connection tube and to flow out of the recess and into the liquid storage section through the connection tube. The sectional area, parallel to the ejecting surface, of the recess is larger than the sectional area, parallel to the ejecting surface, of the connection tube.

Abstract: A liquid ejecting apparatus includes a liquid ejecting head having an ejecting surface on which nozzles that eject a first liquid are formed, a cap having a recess configured to cover the nozzles when the ejecting surface is capped with the cap, a liquid storage section configured to store a second liquid to flow into the recess, a connection tube configured to interconnect the recess and the liquid storage section, and a pump configured to cause the second liquid to flow from the liquid storage section into the recess through the connection tube and to flow out of the recess and into the liquid storage section through the connection tube. The sectional area, parallel to the ejecting surface, of the recess is larger than the sectional area, parallel to the ejecting surface, of the connection tube.

Abstract: A printing apparatus includes a housing portion that forms an internal space, a transportation mechanism that transports a medium so as to cause the medium to pass through the internal space, a liquid discharging head that is installed in the internal space and discharges ink onto the medium, and a first gas feeding mechanism that ejects gas onto the medium through an ejection port at a downstream side in a transportation direction of the medium when seen from the internal space.

Abstract: A printing apparatus includes a housing portion that forms an internal space, a transportation mechanism that transports a medium so as to cause the medium to pass through the internal space, a liquid discharging head that is installed in the internal space and discharges ink onto the medium, and a first gas feeding mechanism that ejects gas onto the medium through an ejection port at a downstream side in a transportation direction of the medium when seen from the internal space.

Abstract: To provide a liquid ejecting apparatus which is able to eject a liquid where the surface tension is comparatively low in a stable manner. In relation to a driving signal for ejecting ink for textile printing where the surface tension is 22 [mN] or more and 30 [mN] or less from a nozzle, the interval between the first ejection driving pulse DP1 and the second ejection driving pulse DP2 and the interval between the second ejection driving pulse DP2 of a cycle T(n) and the first ejection driving pulse DP1 of a cycle T(n+1) are set to be ?t1. Due to this, in a case where medium dots are continuously formed over a plurality of continuous cycles, the ejecting intervals of the ink are set to be constant.

Abstract: [Object] To provide a liquid ejecting apparatus which is able to eject a liquid where the surface tension is comparatively low in a stable manner. [Solution] In relation to a driving signal for ejecting ink for textile printing where the surface tension is 22 [mN] or more and 30 [mN] or less from a nozzle, the interval between the first ejection driving pulse DP1 and the second ejection driving pulse DP2 and the interval between the second ejection driving pulse DP2 of a cycle T(n) and the first ejection driving pulse DP1 of a cycle T(n+1) are set to be ?t1. Due to this, in a case where medium dots are continuously formed over a plurality of continuous cycles, the ejecting intervals of the ink are set to be constant.

Abstract: A maintenance device includes a liquid absorption body which absorbs a liquid which is attached to a nozzle forming surface by abutting the nozzle forming surface of a liquid ejecting head in which a plurality of nozzle rows configured of a plurality of nozzles ejecting the liquid are provided in parallel, wherein the liquid absorption body has a penetration suppressing section which suppresses the spread of the liquid due to penetration of the liquid absorbed from the nozzle forming surface of the liquid ejecting head, and wherein the penetration suppressing section is disposed between the nozzle rows ejecting the liquids of different colors from each other in a direction intersecting the nozzle row direction, in a case where the liquid absorption body abuts the nozzle forming surface of the liquid ejecting head.

Abstract: A slight oscillation waveform includes a first variation element that varies up to a first electric potential of a first polarity relative to a reference electric potential and thereby causes liquid contained in the pressure chamber to be subjected to a pressure variation, a second variation element which varies up to a second electric potential of a second polarity, which is different from the first polarity, relative to the reference electric potential and thereby causes liquid contained in the pressure chamber to be subjected to a pressure variation, a third variation element which varies up to a third electric potential of the first electric potential and thereby causes liquid contained in the pressure chamber to be subjected to a pressure variation, and a fourth variation element which varies up to the reference electric potential and thereby causes liquid contained in the pressure chamber to be subjected to a pressure variation.

Abstract: A maintenance device includes a liquid absorption body which absorbs a liquid which is attached to a nozzle forming surface by abutting the nozzle forming surface of a liquid ejecting head in which a plurality of nozzle rows configured of a plurality of nozzles ejecting the liquid are provided in parallel, wherein the liquid absorption body has a penetration suppressing section which suppresses the spread of the liquid due to penetration of the liquid absorbed from the nozzle forming surface of the liquid ejecting head, and wherein the penetration suppressing section is disposed between the nozzle rows ejecting the liquids of different colors from each other in a direction intersecting the nozzle row direction, in a case where the liquid absorption body abuts the nozzle forming surface of the liquid ejecting head.

Abstract: A driving pulse for air bubble removal flushing which is a first maintenance pulse is a driving pulse which removes air bubbles in an ink flow path of a recording head, a driving pulse for thickened ink discharge flushing which is a second maintenance pulse is a driving pulse which removes thickened ink, thereby stabilizing a meniscus, and in a maintenance process which restores ejection capability of the recording head, after an air bubble removal flushing process is executed by using the driving pulse for air bubble removal flushing, a thickened ink discharge flushing process is executed by using the driving pulse for thickened ink discharge flushing.

Abstract: In the ejection process in which the ink is ejected by using the ejection driving pulse, the ink is heated by a heating mechanism. On the other hand, in the maintenance process in which the ejection ability of the printing head is recovered by repeatedly applying the maintenance driving pulse to the piezoelectric oscillator, the ink is cooled by a cooling mechanism.